CVE-2015-5730

5.0 MEDIUM 7% exploit odds Fix listed Disclosure Web app

What it is

The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 7.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2015-11-09 11:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 7.3% in the next 30 days (EPSS).
Severity: 5.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2015-11-09 11:59 UTC
Last modified: 2026-06-17 00:29 UTC
Exploit probability: 7.3% · EPSS, next 30 days
Weakness: CWE-200 · Information exposure
Record status: Modified

Affected

WordPress ≤ 4.2.3

Attack profile CVSS 2.0 · 5.0

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: None
Availability: None

Raw vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-5730.md and follow it. Check whether this project is affected by CVE-2015-5730. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record